Laura is a science news writer, covering a wide variety of subjects, but she is particularly fascinated by all things aquatic, paleontology, nanotechnology, and exploring how science influences daily life. Laura is a proud former resident of the New Jersey shore, a competitive swimmer, and a fierce defender of the Oxford comma.
ArticleBody:Their ethereal yellow glow popping up from the grass signals summer. While there may be as many as 2,400 species of firefly on Earth, these flying, bioluminescent insects are under threat. Worsening habitat conditions might mean more summers with less fireflies. Recently, scientists also began to question the prevailing hypothesis for why they evolved their glow in the first place.
Dongdong Xu They found that lucibufagin toxins are present in only one subfamily of fireflies and that it may have evolved later. However, bioluminescence itself without this toxin is found widely across the entire family. According to the team, this suggests that the toxin evolved after bioluminescence itself evolved in animals and in response to something other than mating. Instead, their glow may have evolved due to a particularly stressful situation.
Carla Long. All Rights Reserved. “Subtle changes in climate patterns, especially related to temperature, are significantly impacting firefly breeding cycles and habitat quality,” study co-author and University of Kentucky ecologist Darin McNeil said in a statement. Using AI-based machine learning techniques, the team analyzed over 24,000 surveys conducted by citizen science initiative Firefly Watch–now called Firefly Atlas.
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